P2740 - Transmission Fluid Temperature Sensor 'B' Circuit

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Transmission Fluid Temperature Sensor
  • Transmission Fluid Temperature Sensor harness is open or shorted
  • Transmission Fluid Temperature Sensor circuit poor electrical connection

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P2740 Description

The ATF (Automatic Transmission Fluid) Temperature Sensor converts the fluid temperature into a resistance value. The sensor resistance changes with the transmission fluid temperature. As the temperature becomes higher, the sensor resistance decreases. The Transmission Control Module (TCM) monitors the ATF (Automatic Transmission Fluid) Temperature Sensor signal. The TCM sets the OBDII code when the ATF (Automatic Transmission Fluid) Temperature Sensor signal is out of factory specifications.
OBDII Code P2740 - Transmission Fluid Temperature Sensor 'B' Circuit - AutoCodes.com

P2740 Information for specific makes

  • P2740 DODGE Transmission Fluid Temperature Sensor 'B' Circuit

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P2740 Comments

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